/Engine/Source/Editor/UnrealEd/Public/EdGraphUtilities.h
Imports a set of previously exported nodes into a graph
static void ImportNodesFromText ( [UEdGraph](API\Runtime\Engine\EdGraph\UEdGraph) * DestinationGraph, const [FString](API\Runtime\Core\Containers\FString) & TextToImport, [TSet](API\Runtime\Core\Containers\TSet)< [UEdGraphNode](API\Runtime\Engine\EdGraph\UEdGraphNode) * > & ImportedNodeSet )